In a unique laboratory that could be mistaken for a pub, Jimmy Doherty investigates the popular belief that coffee can sober you up. He also looks into interesting new research linking coffee consumption and a reduced risk of liver disease. In San Francisco, Kate Quilton investigates new trendy drink kombucha, and the mind-blowing American team who are turning it into clothes! And Matt Tebbutt takes a bite out of thin-cut steak, and wonders why the supermarket labels don't say which cut of beef they come from. Are retailers trying to fob us off with inferior cuts?
